primitive ectoderm

primitive ectoderm
primordial ectoderm blastodermic e.

Medical dictionary. 2011.

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  • Primitive knot — Latin nodus primitivus Gray s subject #6 47 Days 17 The primitive knot (or primitive node) is the organizer for gastrulation in vertebrates …   Wikipedia

  • primitive streak — n an elongated band of cells that forms along the axis of an embryo early in gastrulation by the movement of lateral cells toward the axis and that develops a groove along its midline through which cells move to the interior of the embryo to form …   Medical dictionary

  • Primitive streak — Infobox Embryology Name = Primitive streak Latin = GraySubject = 6 GrayPage = 47 Caption = Surface view of embryo of a rabbit. arg. Embryonic disk. pr. Primitive streak. Caption2 = Width = 215 System = CarnegieStage = 6b Days = 15 Precursor =… …   Wikipedia

  • Primitive pit — Infobox Embryology Name = PAGENAME Latin = GraySubject = GrayPage = Caption = Surface view of embryo of Hylobates concolor. The amnion has been opened to expose the embryonic disk. (Primitive pit not labeled, but region is visible.) Caption2 =… …   Wikipedia

  • Ectoderm — Das Ektoderm (von gr. εκτος [ektos] „außen“ und to derma „Haut“) ist das obere oder erste Keimblatt des Embryoblasten. Es ist die nach der Gastrulation außen liegende Zellschicht. Das primitive Ektoderm bringt durch den Vorgang der Neurulation… …   Deutsch Wikipedia

  • primitive streak — the region of the embryo that proliferates rapidly, producing mesoderm cells that spread outwards between the layers of ectoderm and endoderm …   The new mediacal dictionary

  • Homeobox protein NANOG — See NANOG (computing) for the network operators group. Nanog homeobox Identifiers Symbols NANOG; External IDs …   Wikipedia

  • layer — A sheet of one substance lying on another and distinguished from it by a difference in texture or color or by not being continuous with it. SEE ALSO: stratum, lamina. SYN: panniculus. ameloblastic l. the internal l. of the enamel organ. SYN: enam …   Medical dictionary

  • Human embryogenesis — is the process of cell division and cellular differentiation of the human embryo during early prenatal development. It spans from the moment of fertilization to the end of the 8th week of gestational age, whereafter the embryo is called a fetus.… …   Wikipedia

  • NANOG — NANOG  это транскрипционный фактор, участвующий в самообновлении недифференцированных эмбриональных стволовых клеток. Содержание 1 Эмбриональные стволовые клетки 2 История …   Википедия

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